Problem
After moving to RHEL 8.5 from 8.4, started having the issue of K8S pods failure.
spec.template.spec.containers[0].env[52].name: Invalid value: "BASH_FUNC_which%%": a valid environment variable name must
consist of alphabetic characters, digits, '_', '-', or '.', and must not start with a digit (e.g. 'my.env-name', or 'MY_ENV.NAME', or 'MyEnvName1', regex used for validation is '[-._a-zA-Z][-._a-zA-Z0-9]*')
The env command in the login shell shows BASH_FUNC_which%% defined as below.
BASH_FUNC_which%%=() { ( alias;
eval ${which_declare} ) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot "$@"
}
Suggeted that /etc/profile.d/which2.sh is the one that sets up the BASH_FUNC_which%%.
- /etc/profile.d/which2.sh
# shellcheck shell=sh
# Initialization script for bash, sh, mksh and ksh
which_declare="declare -f"
which_opt="-f"
which_shell="$(cat /proc/$$/comm)"
if [ "$which_shell" = "ksh" ] || [ "$which_shell" = "mksh" ] || [ "$which_shell" = "zsh" ] ; then
which_declare="typeset -f"
which_opt=""
fi
which ()
{
(alias; eval ${which_declare}) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot "$@"
}
export which_declare
export ${which_opt} which
By removing it, the issue was fixed.
Question
Please help understand where exactly BASH_FUNC_which%% is setup in RHEL8.5 and what is the purpose of this BASH_FUNC_which%%, why is has been introduced in RHEL.
